- What is it that I do?
- Rationale
- Current strategy
- What have I done so far?
rep("debug",\(\infty\))
- Medium-term espectations
21st Feb. 2020
Structure of the talk
Flash intro
“all models are wrong, but some are useful” (Box, 1979).
Maximum Sustainable Yield
Modified from May et al., 1979. Science, 205 (4403), 267-277.
Nash equilibrium?
From Farcas, A. and Rossberg, A. G. 2016.. ICES J. Mar. Sci., 73 (10), 2499-2508.
Model selection
To play around with the package go to NOAA-EDAB/Rpath.
Rpath vs ECOPATH
Rsim vs ECOSIM
↓ \(\overline{Error(\%)}=-0.025\) with no external abiotic forcing (e.g. fishing effort or egg production time series).
Medium term goals
- To wrap a 2nd functional iteration of the
Rpathpackage; - To compute NE MSY solutions for the North Sea ecosystem with
Rpath2 (ecopaRth?)to assess tradeoffs between current management practices (i.e. single species management) and the so-called Ecosystem-Based Fisheries Management to ultimately find optimal mixtures of stocks; and - To, perhaps, evaluate the predictability of these optima and their required management intensity taking into consideration inherent uncertainties.